The cost came in at a projected $120K to lift all the tiles, replace the waterproofing and re-tile (new tiles) and by the way, replace the balustrade because it was 10cm short of current standards. For a leak? The explanation was that the job could only be done under the supervision of an engineer because it involved waterproofing, and the balustrade came into the picture because the tiles came up to the lower edge of the balustrade which brought it into the scope of works. Needless to say, we didn’t go ahead with that job. Rather, we had the whole terrace re-grouted at a cost of $19K. So far, no further leakage has been reported. Something is seriously wrong here.
You are probably not allowed to do that anymore. The whole thing is ridiculous. We have 40 leaking bathrooms, but all of them will be the shower. We could replace the grout for about $1000 a shower, or retile the shower for $5,000 but that is not allowed, we have to remove all tiles in the bathroom, which means removing the fixtures, seal the whole bathroom and replace the tiles and fixtures at at least $30,000 per bathroom. I’m not certain what happens if we have one badly leaking shower because that puts us above the $5K limit.